In this guide, I have listed all the combo buildings available in the release version of TerraScape. You will receive one achievement for each building!
All Merged Buildings in Release Version
Long House

- Assembled from 4 huts.
City District

- Assembled from 4 houses.
Royal Forest

- Assembled from 4 foresters.
Forest Settlement

- Assembled from 3 huts, 1 lumberjack house, 2 foresters, 1 well.
Fruit Farm

- Assembled from 3 gatherer huts
Farmstead

- Assembled from 3 wheat fields and 1 hut.
Ox Mill

- Assembled from 1 wheat field, 1 cattle pasture, 1 mill.
Manor Farm

- Assembled from 2 houses, 4 wheat fields, 1 well.
Smock Mill

- Assembled from 1 wheat field, 1 mill, 1 bakery.
Fishing Outpost

- Assembled from 1 fishing boat, 1 clam farm, 1 fish trap
Fish Farm

- Assembled from 1 fishing boat, 2 fish traps, 1 fisherman’s house.
Vineyard

- Assembled from 3 gatherer huts, 1 brewery.
Iron Mining Camp

- Assembled from 2 iron mines, 1 smelter, 1 mountain.
Mining Enclave

- Assembled from 2 huts, 2 quarries, 1 mason’s house.
Shieling

- Assembled from 3 sheep pastures.
Construction Yard

- Assembled from 2 lumberjack houses, 1 sawmill, 1 forge.
Liquor Distillery

- Assembled from 1 pottery workshop, 2 breweries, 1 gathering hut.
Cathedral

- Assembled from 1 treasury, 2 parks, 2 chapels.
Citadel of Wisdom

- Assembled from 3 parks, 1 school, 1 tavern, 1 library.
Trade District

- Assembled from 2 houses, 1 market, 1 storage, 1 carrier.